115609553 has 2 divisors, whose sum is σ = 115609554. Its totient is φ = 115609552.

The previous prime is 115609531. The next prime is 115609597. The reversal of 115609553 is 355906511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114425809 + 1183744 = 10697^2 + 1088^2 .

It is an emirp because it is prime and its reverse (355906511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115609553 - 2²⁴ = 98832337 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115609453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57804776 + 57804777.

It is an arithmetic number, because the mean of its divisors is an integer number (57804777).

Almost surely, 2^115609553 is an apocalyptic number.

It is an amenable number.

115609553 is a deficient number, since it is larger than the sum of its proper divisors (1).

115609553 is an equidigital number, since it uses as much as digits as its factorization.

115609553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20250, while the sum is 35.

The square root of 115609553 is about 10752.1882889019. The cubic root of 115609553 is about 487.1520943569.

The spelling of 115609553 in words is "one hundred fifteen million, six hundred nine thousand, five hundred fifty-three".